Security experts have estimated that anywhere between 500,000 and five million Web sites may have hosted the malicious widget at one time. The malicious widget targets visitors with vulnerable installations of the Internet Explorer Web browser, serving malicious links that exploit known vulnerabilities in IE as well as Adobe s Acrobat and Reader applications. Infections linked to Network Solutions domains can be traced back to January, 2010 when the company reported large scale compromises and defacement of Websites hosted on Network Solutions Unix servers. The exact number of infected sites isn t known, but believes it is in the neighborhood of 5 million sites.
Source: https://threatpost.com/network-solutions-malicious-widget-may-date-january-081610/74338/